Whiffletree.



G. F. DANIELSON.

WHIPFLETREB.

APPLICATION FILED JULY 7, 1911.

Patented June 18, 1912.

GUsTAvE F. DANIELsoN, 0F YoUNGsToWN, oHIo.

WHIFFLE'IREE.

Specification of Letters Patent.

Patented June 18, 1912.

Application filed July 7, 1911. Serial No. 637,256.

To all whom it may concern:

Be it known that I, GUsTAvn F. DANIEL- soN, a citizen of the United States of America, residing at Youngstown, in the county of Mahoning and State of Ohio, have invented certain new and useful Improvements in Whiflietrees, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to swingle trees of sheet metal construction wherein the material is so disposed and reinforced at the point of attachment o-f the clevis as to resist deformation while at the ends where the tug hooks are secured the material is arranged to alford a certain amount of resiliency, which is desirable in an article of this sort.

The invention consists in the matters hereinafter set forth and more particularly pointed out in the appended claims.

In the drawings, Figure 1 is 'a plan View partially broken away and in section of a swingle tree embodying features of the invention; Fig. 2 is a view of the clevis side of the swingle tree; Fig. 3 is a View in transverse section through the swingle tree and clevis; Fig. 4 is a plan view of the tug hook; Fig. 5 is a view in section on line V-V of Fig. t; and Fig. 6 is a view in detail of a center brace.

Referring to the drawings a sheet metal strip, sheared or otherwise brought to proper conformation, is folded on itself along its longitudinal axis to form sides 1 whose edges 2 are inbent and abutted along the back of the swingle tree. A cross section of the body t-hus formed is substantially rectangular, the sides being stiffened by e1nbossed or outstruck longitudinal ribs 3 and the corners 4t being rounded to increase the rigidity. Near each end the forward margin or web 5 uniting the sides is cut away for a short distance and abutting margins 2 are likewise removed and the sides 1 pressed to form substantially parallel flat bearing faces 6 which ield slightly under tension.

A tug hook f is sheared out of sheet metal or other proper material, the cut being made preferably along the line 8 indicated in Fig. t and the surplus material being 4swaged outwardly toward the bend of the hook to stiffen the latter and form a rounded and widened bearing surface 9 against which the loop or hook of a tug bears. Each hook, which is inturned, is pivoted between the portions 6 on the body on a suitable bolt or pin 10. Preferably sufcient portion of the web 5 is removed to allow the point of the hook to enter the body and at the same time to permit the web to act as an abutment limiting the inturning of the hook so that the shank of the hook is substantially at right angles to the swingle tree when at its inner limit of motion.

The central portion of the body which is apertured to receive a clevis pin or bolt 11, is reinforced by a sheet metal strip 12 bent transversely between its ends to form a W, the marginal portions of the strip being shaped to bear throughout their length against the molded inner faces of the sides 1, the web 5 and the abutting edges 2 of the body. The clevis pin 11 may carry, if desired, a ferrule 13 to enlarge its bearing surface against the central bend of the reinforcement 12. A clevis 14, is formed of a sheet metal bar having rounded enlarged ends 15 which are apertured to receive the clevis pin 11 and give a broad bearing surface contacting with the ribs or embossed portions 3 of the body. Between the enarged portions, the clevis strip is bent transversely into a tubular body preferably infolding a reinforcing rod 16. By this form of construction, a very light body is obtained that is so proportioned as to combine great strength with lightness while it is slight-ly resilient at the end portions where the tug hooks are attached. The peculiar reinforcement at the center of the body has two functions; first, that of affording a substantially solid or full bearing for the clevis bolt or rivet across the swingle tree, and second, preventing t-he collapsing or drawing together of the sides of the center portion of the swingle tree which would otherwise occur if the center bolt or rivet was forced up too tightly. The distribution of the material in the end hooks is such as to enlarge the hook bodies to give additional wearing surface and greater strength at the point of application of the load and the method of product-ion of the hook is economical and increases the strength thereof without using additional material.

Obviously, changes in the details of construction may be made without departing from the spirit of the invention and Ido not care to limit myself to any particular form or arrangement of parts.

Y What I claim is l. A swingle-tree comprising a sheet metal strip folded along its longitudinal axis with its outer marginal portions inturned and abutted, the sides of the formed body having longitudinal ribs and substantially parallel end portions from which the web and abutting marginal portions are removed, and a centrally disposed sheet metal enforcing strip interposed between the sides of the body against whose inner faces it bears throughout its length.

2. A swingle tree comprising a sheet metal strip folded along its longitudinal axis with its outer edges inturned and abutted, the sides of the formed body having a pair of alined clevis bolt apertures and embossed longitudinal ribs and substantially parallel end portions beyond the ribs from which the web and abuttingmargins are' removed, and a centrally disposed sinuous strip of sheet metal interposed on edge between the sides of the body against whose `inner faces it bears throughout its length, the strip being adapted to form a clevis bolt bearing adjacent the apertures.

'3. A swingle tree comprising a sheet metal strip folded along its longitudinal axis into a hollow body, of substantially rectangular cross-section, symmetrically ta- Copies of this patent may be obtained for five cents each, by addressing the pered longitudinally from the center, the sides of the body extending ,beyond the marginal portions in substantially parallel relation, and having a pair of centrally disposed alined clevis bolt holes, and a sinuous reinforcing strip of sheet metal bent transversely between its ends tovform a bearing between the clevis bolt holes.

4. A swingle tree comprising a sheet metal strip folded along its longitudinal axis into a hollow body symmetrically tapered longitudinally from the center, the sides of the body extending beyond the marginal end portions in substantially parallel relation, longitudinal ribs formed up on the sides of the body and 'a reinforcing strip of sheet metal centrally disposed between the middle portions of the body sides adjacent alined clevis bolt openings inV said sides, the strip bearing throughout its length along its margins against the inner faces of the sides and ribs and forming a clevis bolt bearing between and adjacent the clevis bolt openings.

In testimony whereof I aiiix my signature in presence of two witnesses.

. GUSTAVE F. DANIELSON.

Witnesses:

C. R. STIGKNEY, ANNA C. RAVILER.

Commissioner of Patents,

Washington, D. C. 

